KR102049317B1 - 제조 공정성이 향상된 단위셀 제조 방법 - Google Patents
제조 공정성이 향상된 단위셀 제조 방법 Download PDFInfo
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- KR102049317B1 KR102049317B1 KR1020150126322A KR20150126322A KR102049317B1 KR 102049317 B1 KR102049317 B1 KR 102049317B1 KR 1020150126322 A KR1020150126322 A KR 1020150126322A KR 20150126322 A KR20150126322 A KR 20150126322A KR 102049317 B1 KR102049317 B1 KR 102049317B1
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- South Korea
- Prior art keywords
- electrode
- separator
- unit cell
- electrodes
- laminated
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Images
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
- H01M10/0436—Small-sized flat cells or batteries for portable equipment
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
- H01M10/0585—Construction or manufacture of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators
-
- H01M2/1016—
-
- H01M2/1673—
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
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Abstract
Description
도 2 및 도 3에는 도 1의 단위셀을 제조하는 일련의 과정을 나타낸 모식도들 이다;
도 4는 본 발명의 하나의 실시예에 따른 단위셀 제조 방법의 흐름도이다;
도 5는 본 발명의 또 다른 실시예에 따른 단위셀의 모식도이다;
도 6은 본 발명의 하나의 실시예에 따른 전극조립체의 평면 모식도이다.
Claims (16)
- 전극조립체를 구성하는 둘 이상의 단위셀들을 제조하는 방법으로서,
(a) 제 1 전극과 제 2 전극 사이에 제 1 분리막을 개재하고, 제 1 분리막 및 전극들을 라미네이션(lamination) 시키는 과정;
(b) 제 2 전극과 제 3 전극 사이에 제 1 분리막의 면적 대비 200% 내지 400%의 면적을 가지는 제 2 분리막을 개재하고, 이들 전극과 접한 제 2 분리막의 일부와 전극들을 라미네이션 시키는 과정;
(c) 상기 제 2 분리막에서 라미네이션 되지 않은 나머지 부위를 제 3 전극의 상면 방향으로 절곡하여 제 3 전극의 상면이 제 2 분리막으로 감싸인 제 1 단위셀을 제조하는 과정; 및
(d) 상기 과정(a) 내지 과정(c)을 반복 수행하여, n개(n≥2)의 단위셀을 더 제조하는 과정;을 포함하고,
상기 과정(c)에서, 제 2 분리막은, 제 3 전극의 상면을 감싼 상태에서 절곡된 부위가 커팅(cutting)되어, 제 3 전극의 상부 전면에 밀착되는 외곽 분리막을 형성하는 것을 특징으로 하는 방법. - 제 1 항에 있어서, 상기 제 1 분리막 및 제 2 분리막의 표면에는 접착제가 도포되어 있고, 상기 라미네이션은, 분리막 표면에 전극들을 접촉시킨 후, 이들의 표면에 열을 인가하여 상호 접합하는 공정인 것을 특징으로 하는 방법.
- 제 1 항에 있어서, 상기 과정(a) 내지 과정(d)에서 제조된 단위셀들은 제 3 전극을 감싸는 제 2 분리막이 상부에 위치되도록 접이식 수납 장치(folding magazine)에 적재되는 것을 특징으로 하는 방법.
- 삭제
- 제 1 항에 있어서, 상기 외곽 분리막은 제 3 전극 상면에 라미네이션 되는 것을 특징으로 하는 방법.
- 제 1 항에 있어서, 상기 제 1 전극 및 제 3 전극은 양극활물질을 함유하는 양극이고, 상기 제 2 전극은 음극활물질을 함유하는 음극인 것을 특징으로 하는 방법.
- 제 1 항에 있어서, 상기 제 1 전극 및 제 3 전극은 음극활물질을 함유하는 음극이고, 상기 제 2 전극은 양극활물질을 함유하는 양극인 것을 특징으로 하는 방법.
- 제 1 항에 있어서, 상기 제 1 전극 및 제 3 전극 중에서, 어느 하나는 집전체의 일면에만 전극활물질이 도포되어 있는 단면 전극이고, 나머지 전극들은 집전체의 양면에 전극활물질이 도포되어 있는 양면 전극인 것을 특징으로 하는 방법.
- 제 1 항에 있어서, 상기 제 1 전극, 제 2 전극 및 제 3 전극은 집전체의 양면에 전극활물질이 도포되어 있는 양면 전극인 것을 특징으로 하는 방법.
- 제 1 항에 있어서, 상기 제 1 분리막은 제 1 전극, 제 2 전극 또는 제3 전극의 표면적 대비 110% 내지 150%의 표면적을 가지는 것을 특징으로 하는 방법.
- 제 1 항에 따른 방법으로 제조된 단위셀로서,
상기 단위셀은 양극, 제 1 분리막, 음극, 제 2 분리막, 양극, 외곽 분리막이 차례로 적층 및 라미네이션된 구조의 바이셀(bi-cell), 또는 음극, 제 1 분리막, 양극, 제 2 분리막, 음극, 외곽 분리막이 차례로 적층 및 라미네이션된 구조의 바이셀(bi-cell)인 것을 특징으로 하는 단위셀. - 제 11 항에 따른 단위셀을 n개(n≥2) 포함하는 전극조립체로서,
상기 전극조립체는, 제 1 단위셀의 외곽 분리막 상에 제 2 단위셀의 제 1 전극이 위치된 상태로 제 1 전극과 외곽 분리막이 상호 라미네이션된 구조로 이루어져 있는 것을 특징으로 하는 전극조립체. - 제 12 항에 있어서, 상기 전극조립체는 n개(n≥3)의 단위셀들을 포함하고 있고, 제 1 단위셀로부터 제 n 단위셀까지 라미네이션된 구조인 것을 특징으로 하는 전극조립체.
- 삭제
- 삭제
- 삭제
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